1. In a bowl, combine celery, apple, grapes, pistachios, and mint; toss to thoroughly mix.
2. Drizzle with agave nectar and lemon juice; toss to coat.
3. Serve immediately or chill before serving. Tasty with waffles, or any breakfast/brunch potluck. Good for you, easy to double or treble, and everyone loves it!
* I know pistachios are expensive, but I've tried this with walnuts, pecans, even macadamia nuts, and pistachios are hands down, the best flavor and texture. Not too crunchy, not too strong a taste, juuuust right (As Goldilocks would say). Besides, they go well with the green theme!
I've made this salad almost every Sunday for the last 3 months, and have gone through many many permutations until I came to this perfect combo of ingredients. It started as a version of waldorf, and came to its final iteration on St. Patrick's Day - appropriately so because it's all GREEN!